/*
 * Copyright (c) 2020, 2024, Huawei Technologies Co., Ltd. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include "jbolt/jBoltUtils.hpp"

JBoltUtils::MetaDataKeepAliveMark::MetaDataKeepAliveMark(Thread* thread) : _thread(thread), _kept() {
  assert(thread == Thread::current(), "Must be current thread");
  assert(_thread->is_in_live_stack((address)this), "not on stack?");
}

JBoltUtils::MetaDataKeepAliveMark::~MetaDataKeepAliveMark() {
  for (int i = _kept.length() - 1; i >= 0; --i) {
    Metadata* md = _kept.at(i);
    int idx = _thread->metadata_handles()->find_from_end(md);
    assert(idx != -1, "not in metadata_handles list");
    _thread->metadata_handles()->remove_at(idx);
  }
}
